Fix problem 1

change integer to double

5. Conditional Statements/README.md

@@ -2,7 +2,7 @@ Homework: Conditional Statements
 ================================
 
 ### Problem 1. Exchange If Greater
-*	Write an if-statement that takes two integer variables a and b and exchanges their values if the first one is greater than the second one. As a result print the values a and b, separated by a space.
+*	Write an if-statement that takes two double variables a and b and exchanges their values if the first one is greater than the second one. As a result print the values a and b, separated by a space.
 
 _Examples:_